Add oil, garlic and onion to large stockpot over medium heat.
Saute for 3-4 minutes.
Add sage, salt, pepper, broth and squash.
Bring to a boil.
Cover, reduce heat and simmer for 20 minutes (or until squash has a tender consistency).
Use stick blender to lightly puree, leaving some chunks, or puree half of the soup in a food processor or blender and return to pot.
Garnish with parmesan cheese and more fresh sage (if desired).
